A type of terrain that hinders creatures, usually by damaging them. Examples: Pits, lava, and deep water. A creature can make a saving throw when it is pulled, pushed, slid, or teleported into hindering terrain. See also teleportation.

If arriving in the destination space would cause the target to fall or if that space is hindering terrain, the target can immediately make a saving throw. On a save, the teleportation is negated. Otherwise, the target arrives in the destination space.